NR 503 Final exam Question And
Answers (Complete solutions and resources for
the course exam) Latest Update 2024
Chapters 2-4
1. Which of the following is a condition which may occur during the
incubation period?
a. Onset of clinical illness
b. Receipt of infection
c. Signs & symptoms of disease
d. Transmission of infection
e. Isolation of disease carrier through quarantine
Rationale: The incubation period is defined as the interval from receipt
of infection to the time of onset of clinical illness. Accordingly, individuals
may transmit infectious agents during the incubation period as they show
no signs of disease that would enable the isolation of sick individuals by
quarantine.
2. Chicken pox is a highly communicable disease. It may be transmitted by
direct contact with a person infected with the varicella-zoster virus
(VZV). The typical incubation time is between 10 to 20 days. A boy
started school 2 weeks after showing symptoms of chicken pox including
mild fever, skin rash, & fluid-filled blisters. One month after the boy
returned to school, none of his classmates had been infected by VZV.
The main reason was:
a. Herd immunity
b. All had been immunized prior to the school year
c. Contact was after infectious period
d. Subclinical infections were not yet detected
e. Disease was endemic in the class
Rationale: The disease is spread by contact with an infected individual
who can transmit the agent (VZV) to immunologically naive persons
during the incubation period & for several days after onset of clinical
illness. Since the boy started school 14 days after showing signs
consistent with chicken pox, it is most likely that he was no longer
infectious.
3. Which of the following is characteristic of a single-exposure,
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, common-vehicle outbreak?
a. Long latency period before many illnesses develop
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Answers (Complete solutions and resources for
the course exam) Latest Update 2024
Chapters 2-4
1. Which of the following is a condition which may occur during the
incubation period?
a. Onset of clinical illness
b. Receipt of infection
c. Signs & symptoms of disease
d. Transmission of infection
e. Isolation of disease carrier through quarantine
Rationale: The incubation period is defined as the interval from receipt
of infection to the time of onset of clinical illness. Accordingly, individuals
may transmit infectious agents during the incubation period as they show
no signs of disease that would enable the isolation of sick individuals by
quarantine.
2. Chicken pox is a highly communicable disease. It may be transmitted by
direct contact with a person infected with the varicella-zoster virus
(VZV). The typical incubation time is between 10 to 20 days. A boy
started school 2 weeks after showing symptoms of chicken pox including
mild fever, skin rash, & fluid-filled blisters. One month after the boy
returned to school, none of his classmates had been infected by VZV.
The main reason was:
a. Herd immunity
b. All had been immunized prior to the school year
c. Contact was after infectious period
d. Subclinical infections were not yet detected
e. Disease was endemic in the class
Rationale: The disease is spread by contact with an infected individual
who can transmit the agent (VZV) to immunologically naive persons
during the incubation period & for several days after onset of clinical
illness. Since the boy started school 14 days after showing signs
consistent with chicken pox, it is most likely that he was no longer
infectious.
3. Which of the following is characteristic of a single-exposure,
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, common-vehicle outbreak?
a. Long latency period before many illnesses develop
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